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Definition of solder
solder
/ˈsɑːdɚ/
sol · der
Plural:solders
•Past Simple:soldered
•Past Participle:soldered
•Present Participle:soldering
solder Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
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Wordle Guess
• noun
1
A low-melting metal alloy used to join less fusible metals together, commonly in plumbing or electronics.
Example
"The technician melted a thin wire of silver solder to secure the microchip to the motherboard."
Synonyms
View all synonyms for solder• verb
1
To join, fuse, or repair with a low-melting metal alloy.
Example
"She carefully soldered the broken copper wires back together to fix the antique radio."
2
To unite or bond closely and firmly (often used figuratively).
Example
"The shared experience of the harsh winter soldered the community into a cohesive, supportive unit."
Synonyms
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View all antonyms for solder• Rhymes for solder
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Word Origin & Etymology
From Middle English 'soudour', from Old French 'soudure', derived from the verb 'souder' (to solder), which ultimately comes from Latin 'solidare' meaning 'to make solid'.
Cite this Entry
Wordmom. (2026). Definition of Solder. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/solder